<template>
  <div class="department-container">
    <div class="app-container">
      <el-card>
        <!-- 用一个行列布局 -->
        <el-row
          type="flex"
          justify="space-between"
          align="middle"
          style="height: 40px"
        >
          <el-col :span="20">
            <svg-icon icon-class="home" /><span>人事资源管理系统</span>
          </el-col>
          <el-col :span="4">
            <el-row type="flex" justify="end">
              <!-- 两个内容 -->
              <el-col>负责人</el-col>
              <!-- 下拉菜单 element -->
              <el-col>
                <el-dropdown>
                  <span> 操作<i class="el-icon-arrow-down" /> </span>
                  <el-dropdown-menu slot="dropdown">
                    <el-dropdown-item
                      @click.native="hAdd('')"
                    >添加子部门</el-dropdown-item>
                  </el-dropdown-menu>
                </el-dropdown>
              </el-col>
            </el-row>
          </el-col>
        </el-row>
      </el-card>
    </div>
    <!-- 放置一个el-tree组件 -->
    <el-tree :data="list" :default-expand-all="true">
      <!-- 作用域插槽 data拿到的是每一个子节点的对象 -->
      <!--
      #default === slot-scope
      什么时候用到作用域插槽？父组件中如果想使用子组件中的数据进行自定义内容的渲染 (类似于table 单元格数据渲染)
    -->
      <template #default="{ data }">
        <el-row
          type="flex"
          justify="space-between"
          align="middle"
          style="height: 40px; width: 100%"
        >
          <el-col :span="20">
            <span>{{ data.name }}</span>
          </el-col>
          <el-col :span="4">
            <el-row type="flex" justify="end">
              <!-- 两个内容 -->
              <el-col>{{ data.manager }}</el-col>
              <el-col>
                <!-- 下拉菜单 element -->
                <el-dropdown>
                  <span> 操作<i class="el-icon-arrow-down" /> </span>
                  <!-- 下拉菜单 -->
                  <el-dropdown-menu slot="dropdown">
                    <el-dropdown-item
                      @click.native="hAdd(data.id)"
                    >添加子部门</el-dropdown-item>
                    <el-dropdown-item
                      @click.native="hEdit(data.id)"
                    >编辑部门</el-dropdown-item>
                    <el-dropdown-item>删除部门</el-dropdown-item>
                  </el-dropdown-menu>
                </el-dropdown>
              </el-col>
            </el-row>
          </el-col>
        </el-row>
      </template>
    </el-tree>
    <el-dialog
      :title="isEdit ? '编辑' : '添加'"
      :close-on-click-modal="false"
      :close-on-press-escape="false"
      :visible.sync="showDialog"
    >
      <addor-edit
        v-if="showDialog"
        :id="curId"
        :is-edit="isEdit"
        @success="success"
      />
    </el-dialog>
  </div>
</template>

<script>
import { getDepartments } from '@/api/departments'
import { tranListToTreeData } from '@/utils/index'
import AddorEdit from './deptDialog.vue'
export default {
  components: { AddorEdit },
  data() {
    return {
      // 依赖一份树形数据
      // 依赖一份树形数据
      curId: '',
      list: [],
      showDialog: false, // 是否显示弹层
      isEdit: false
    }
  },
  created() {
    this.loadDepartments()
  },
  methods: {
    async loadDepartments() {
      try {
        const res = await getDepartments()
        // console.log(res)
        // 由于业务中传智教育的pid是:-1，它是最高级的节点
        // shift 从数组头部取出一个元素
        const root = res.data.depts.shift()
        // console.log(root)
        // 用工具函数把 平铺的数组转成 树型数据
        this.list = tranListToTreeData(res.data.depts)
      } catch (err) {
        // console.log(err)
      }
    },

    // 添加
    hAdd(id) {
      // 显示弹层
      this.showDialog = true
      // 更新当前操作的id
      // console.log(id, 888)
      this.curId = id
      this.isEdit = false
    },
    // 编辑
    hEdit(id) {
      // 显示弹层
      this.showDialog = true
      // 把 id 传给子组件
      this.curId = id
      // 显示编辑弹层
      this.isEdit = true
    },
    success() {
      // 关闭弹层, 再次更新数据
      this.showDialog = false
      this.loadDepartments()
    }
  }
}
</script>
<style lang="less" scoped></style>
